After spending a while trying to figure out what to do for my first SCP, I decided to try taking the silly and childish concepts from the more out-there sci-fi/fantasy, and implying something darker with it. My first attempt here, I'm not too proud but maybe it's decent enough: http://scpsandbox2.wikidot.com/malconer

Capitalise 'Site', since it is used as a proper noun to refer to a very specific site.

SCP-#-A is an event triggered by direct visual observation of SCP-# for a prolonged period of time

Even if the exact time is unknown, there has to be at least minimum that was deduced.

The base idea is rather similar to SCP-2116, which is also about a doll that can revert one's age. In that article's case, it built up the moment and delivered at the end. Here, you presented it upfront and the overall product feels like a stale description of the item.

If you wish to proceed with this, you have to make an effort to make this stand out. It can't simply be "doll that makes one a kid". The appeal of many SCPs is how meanings are ascribed and attached to the various anomalous objects. This is something found in many highly rated SCPs made in recent years.